These little carabiners are great for what they are rated for! They're very small, don't forget that, and cheap, too. I use these two keep a pair of winter gloves together, and carabined to my daybag. Having a few of these can be good for small gear improvements like that. I don't know that I would really try to do serious fastening with these, they're definitely too small to hold serious weight, but, they are great for improvising a quick connect system. Nothing special, but, good to have these little suckers about for tiny tasks.

Used is as a backup for my eyelets on my basha, broke after a windy nigth. Can be fine for some carring jobs. But not a real job...

Buy something else. Really. I bought few and they all broke. The last one didn´t even make it home. Something smashed it in the backpack. They are a joke. You can break them easily with your hands. Not even for light use. Buy better ones, you will save money.